74HC161PW NXP Semiconductors, 74HC161PW Datasheet - Page 4
74HC161PW
Manufacturer Part Number
74HC161PW
Description
Counter ICs SYNC 4-BIT BINARY COUNTER
Manufacturer
NXP Semiconductors
Datasheet
1.74HC161D653.pdf
(12 pages)
Specifications of 74HC161PW
Counter Type
Binary Counters
Mounting Style
SMD/SMT
Package / Case
SOT-403
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74HC161PW,112
Philips Semiconductors
FUNCTION TABLE
Note
1. The TC output is HIGH when CET is HIGH and the counter is at terminal count (HHHH).
December 1990
reset (clear)
parallel load
count
hold
(do nothing)
Presettable synchronous 4-bit binary
counter; asynchronous reset
H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition
q = lower case letters indicate the state of the referenced output one set-up time prior to the
X = don’t care
OPERATING MODE
= LOW-to-HIGH CP transition
LOW-to-HIGH CP transition
L
H
H
H
H
H
MR
X
X
X
Fig.4 Functional diagram.
CP
X
X
X
h
I
X
CEP
4
INPUTS
X
X
X
h
X
I
CET
X
I
I
h
h
h
PE
X
I
h
X
X
X
D
n
74HC/HCT161
Product specification
L
L
H
count
q
q
n
n
Q
OUTPUTS
n
L
L
(1)
(1)
(1)
L
TC